Pulling over and lasting of shoes



1969 J. 5. KAMBORIAN ETAL Re. 26,738

PULLING OVER AND LASTING OF SHOES Original Filed July 16. 1965 17 Shasta-Sheet 1 WIIIIII INVBNTORS War/fer A. l ornbe fer Jacob 5 Kvmbonan r James H. Arsenau? /7M-&

ATTORNEY 3, 1969 J. 5. KAMBORIAN EI'AL Re. 26,738

PULLING OVER AND LASTING OF SHOES Original Filed July 16. 1965 1'7 Sheets-Sheet 3 FIG.

Dec. 23, 1969 J. 5. KAMBORIAN ETAL Re. 26,738

PULLING OVER AND LASTING OF SHOES Original Filed July 16, 1965 1'7 Sheets-Sheet 3 m 7/////////// 1.1 m w Mm t nn mflm fihuw L I! A 0 w FIG: .3

Dec. 23, 1969 J. 5. KAMBORIAN ETAL Re. 26,738

PULLING OVER AND LASTING OF SHOES Original Filed July 16. 1965 17 Sheets-Sheet 4 FIG-5 I Dee 3. 1969 J. 5. KAMBORIAN ETAL Re. 26,738

PULLING OVER AND LASTING OF SHOES Original Filed July 16, 1965 v 17 Sheets-Sheet 5 F [6.- 28A 28A F- Dec. 23, 1969 .1. s. KAMBORIAN ETAL Re. 26,738

PULLINC- OVER AND LASI'ING OF SHOES Original Filed July 16, 1965 17 Sheets-Sheet 6 FIG-l3 Dec. 23, 1969 J. 5. KAMBORIAN EI'AL Re. 26,738

PULLING OVER AND LASTING 0F SHOES Original Filed July 16, 1965 1? Sheets-Sheet gm m 3. 1969 J. 5. KAMBORIAN ETAL Re. 26,738

PULLING OVER AND LASTING OF SHOES Original Filed July 16. 1965 17 Sheets-Sheet 6 FIG-3.9

1969 J. 5. KAMBORIAN ETAL Re. 26,738

PULLING QVER AND LAS'I'ING 0F SHOES Original Filed July 16. 1965 1? Sheets-Sheet 9 Dec. 23, 1969 J. 5. KAMBORIAN ETAL Re. 26,738

PULLING OVER AND LASTING OF SHOES Original Filed July 16, 1965 w Sheets-Sheet 10 5/6 FIG..30

I'III VII 1959 J. 5. KAMBORIAN EI'AL Re. 26,738

PULLING OVER AND LASTING 0F SHOES Original Filed July 16, 1965 17 Sheets-Sheet 11 1969 J. s. KAMBORIAN ETAL Re. 26,738

PULLING OVER AND LASTING OF SHOES Original Filed July 16. 1965 17 Sheets-Sheet 12 3. 1969 J. 5. KAMBORIAN ETAL Re. 26,738

PULLING OVER AND LASTING OF SHOES Original Filed July 16, 1965 17 Sheets-Sheet 13 l m m M MI a m 0 a 7 9 4 Iii G 7? n 6 n w m I Us. 7 mm; 4 3m; w w .7 4 4 Y WW1 8 a m 7 i m IF 0 0 m z 6 4 m u a mu m :I n F m m G o o m m as c wk n 7 n fi w munu 7 V "I, 6 9 m -23.1969 J. 5. KAMBORIAN am Re. 26,738

PULLING OVER AND LAS'I'ING OF SHOES Original Filed July 16, 1965 17 Sheets-Sheet 14 FIG-5! J bl a FIG.- 52A 1969 J. 5. KAMBORIAN ETAL Re. 26,738

PULLING OVER AND LASTING 0F snows Original Filed July 16. 1965 17 Sheets-Sheet 15 1969 J. 5. KAMBORIAN ETAL Re. 26,738

rvnum ovsn AND mswme OF SHOES Original Filed July 16. 1965 17 Sheets-Sheet 16 1969 J. 5. KAMBORIAN ETAL Re. 26,738

PULLING OVER AND LASTING OF SHOES Original Filed July 16, 1965 17 Sheets-Sheet 1'? United States Patent Oflice Re. 26,738 Reissuzed Dec. 23, 1969 26,738 PULLING OVER AND LASTING F SHOES Jacob S. Kamborian, 70 Crestwood Road, West Newton, Mass. 02165, Walter A. Vorn Berger, Medford, and James H. Arsenault, Whitinsville, Mass.; said Arsenault and said Vorn Berger assignors to said Kamborian Original No. 3,397,417, dated Aug. 20, 1968, Ser. No. 472,525, July 16, 1965. Application for reissue Sept. 20, 1968, Ser. No. 771,675

Int. Cl. A43d 21/08, 23/02, 25/10 US. Cl. 12-145 36 Claims Matter enclosed in heavy brackets appears in the original patent but forms no part of this reissue specification; matter printed in italics indicates the additions made by reissue.

ABSTRACT OF THE DISCLOSURE There is disclosed herein a machine for pulling and stretching the toe and forepart portions of a shoe upper about the corresponding portion of a last while the last and an insole secured to the last bottom are supported bottom-down, for applying cement to the insole and for wiping the margin of the stretched upper portions against the insole to adhesively attach the upper margin to the insole.

This invention is concerned with the manufacture of shoes and is an improvement over the invention having a similar purpose disclosed in pending application Ser. No. 340,411 filed Jan. 27, 1964, and now Patent No. 3,332,096.

One aspect of the invention is concerned with a support arrangement for supporting bottom-down a last having an upper mounted thereon and an insole located on its bottom so that a selected portion of the upper margin may be wiped against the corresponding portion of the insole. The support arrangement includes an outer support section for supporting the margin of the insole portion and insole rests located inwardly of the outer support section. The support section is mounted so as to be yieldably urged upwardly to a level above the insole rests and to be capable of universal tilting movement. The support section extends upwardly from a base section that underlies the insole rests, and the insole rests are movable from their normal prone positions to an upright position to porvide access to the base section and enable the base section to be removed from the machine. The insole rests are spring urged downwardly against stop members, and one stop member is adjustable heightwise to thereby adjust the relative heightwise positions of the insole rests.

Another aspect of the invention is concerned with the stretching of the selected portion of the upper margin about the corresponding portion of the last prior to wiping the upper portion against the insole portion. A shoe assembly comprising the last having the upper mounted on it and the insole located on its bottom is supported bottom-down on a shoe support. A retarder is engageable with the last portion and extends upwardly of the support and a gripping means is located outwardly of the last portion. The parts are so constructed that the gripping means is caused to grip the upper margin portion and then move downwardly from an upper position with the gripped margin portion dragging about the retarder. The horizontal spacing between the gripping means in its upper position and the retarder is adjustable to accommodate the gripping means to the particular thickness and resistance to sliding of the upper material utilized.

Another aspect of the invention is concerned with a mechanism for stopping the upward movement of the shoe support from a lower position wherein the insole is below the tops of wipers that are intended to wipe the margin portion against the insole portion to an upper position wherein the insole bottom is at least as high as the tops of the wipers. The shoe support is on a last that can be raised to raise the shoe support. A tang on the post is in registry with a lug whose heightwise position is adjustable, and the engagement of the tang with the lug terminates the upward movement of the post.

In another aspect of the invention, the shoes support is mounted for relative heightwise movement with respect to a shoe conforming means which engages the shoe assembly and snugly conforms the upper portion to the shape of the last during a rise of the shoe support to bring the insole bottom to a level that is at least as high as the level of the tops of wipers that are located below the conforming means. A hold-down is constructed to bear against the top of the shoe assembly under a yieldable force during this rise of the shoe assembly to prevent the shoe assembly from shifting with respect to the support under the influence of the action of the conforming means on the shoe assembly during the rise of the shoe assembly.

Another aspect of the invention is concerned with the pressure exerted by the retarder against the wiper bottom during the rise of the shoe assembly. An arrangement is provided that enables the retarder to press the upper margin portion against the wiper bottom under a relatively low pressure during the rise of the shoe assembly and to press the margin portion against the wiper bottom under a higher pressure after the shoe assembly has completed its rise and prior to movement of the wiper in a direction to wipe the margin portion against the insole portion.

Another aspect of the invention is concerned with a bumper located alongside the shoe conforming means. The shoe conforming means takes the form of a pad that is yieldably urged inwardly against the shoe assembly during the rise of the shoe assembly under relatively light pressure. An arrangement is provided, operative after the completion of the rise of the shoe assembly and prior to the wiping of the margin portion against the insole portion, to concomitantly force the pad against the shoe assembly under relatively heavy pressure and bring the bumpers to bear against the shoe assembly.

The wiping means utilized are mounted for movement in a wiping stroke from a retracted to an advanced position to thereby wipe the margin portion against the insole portion. Just prior to the wiping stroke a plurality of instrumentalities, that include insole supporting members, retarders and a hold-down, are in engagement with the shoe assembly. During the wiping stroke the relationship of these instrumentalities with respect to the shoe assembly is changed. Another aspect of the invention is concerned with the mechanism for changing these relationships. This mechanism includes a shaft that is movable in response to actuation of a wiper drive means to impart a wiping stroke, with actuating members on the shaft actuating a plurality of control members in a predetermined sequence during the movement of the shaft.

In the retracted position of the wiping means, a retarder is in vertical registry with an area of the bottom of a wiper that is adjacent to an inner edge of the wiper so that the retarder will press the upper margin portion against the wiper bottom during the rise of the shoe assembly. Another aspect of the invention is concerned with an arrangement for horizontally adjusting said area of the wiper when the wiper is in its retracted position with respect to the retarder.

Although the particular portion of the shoe being operated on is immaterial, in its broadest aspects, to the facets of the invention described above, the illustrative cmbodiment of the invention discloses the operation as taking place at the toe portion of the shoe including the toe and extremity and the forepart portions adjacent the toe end extremity. The toe and forepart portions of the upper margin are stretched about the last by front pincers and side pincers and these margin portions are pressed against wiper bottoms by front and side retarders during the rise of the shoe assembly. The wipers are caused to move through their wiping stroke to wipe the toe and forepart portions of the upper margin against the insole after the completion of the rise of the shoe assembly. Another aspect of the invention is concerned with an arrangement for releasing the pincers from the upper margin and moving the pincers downwardly out of the way of the wipers prior to the commencement of the wiping stroke.

In the illustrative embodiment of the invention, the shoe conforming means takes the form of a yoke located above the wipers that conforms the toe and forepart portions of the upper to the shape of the last during the rise of the shoe assembly. Another aspect of the invention is concerned with an arrangement wherein the front and side gripping means grip the toe end and forepart portions of the upper margin and then move downwardly to stretch the toe and forepart of the upper about the last, the shoe assembly is then raised through the yoke to bring the insole bottom to a level at least as high as the level of the tops of the wipers, the toe and forepart portions of the upper margin are pressed against the wiper bottoms during the rise of the shoe assembly, the front gripping means releases the upper margin during the rise of the shoe assembly and moves downwardly out of the way of the wipers, the bumpers are forced inwardly against the shoe assembly after the completion of the rise of the shoe assembly, the side gripping means are disengaged from the upper margin and are moved downwardly out of the way of the wipers after the bumpers have engaged the shoe assembly, and the wipers are then caused to move through their wiping stroke to wipe the toe end and forepart portions of the upper margin against the insole.

In the accompanying drawings:

FIGURE 1 is a side elevation of a machine that forms an illustrative embodiment of the invention;

FIGURE 2 is a front elevation of the upper portion of the machine;

FIGURE 3 is a vertical section of a portion of the machine including a toe post on which the support for the shoe assembly is mounted;

FIGURE 4 is a view taken on the line 4-4 of FIG- URE 3;

FIGURE 5 is a front elevation of a portion of the machine including the arrangement for supporting the shoe assembly;

FIGURE 6 is a section taken on the line 6-6 of FIG- URE 5;

FIGURE 7 is a plain view taken on the line 7-7 of FIGURE 6;

FIGURE 8 is a view taken on the line 8-8 of FIG- URE 6;

FIGURE 9 is a view taken on the line 9-9 of FIG- URE 6;

FIGURE 10 is a plan view of the cement extruding mechanism;

FIGURE 11 is a section taken on the line 11-11 of FIGURE 10;

FIGURE 12 is a view taken on the line 12-12 of FIGURE 10;

FIGURE 13 is a view taken on the line 13-13 of FIGURE 10;

FIGURE 14 is a view taken on the line 14-14 of FIGURE 10;

FIGURE 15 is an elevation, partly in section, of the lug and a column on which the lug is mounted for stopping the upward movement of the post when the post has raised the shoe assembly to the desired level;

FIGURE 16 is an elevation, partly in section, of the front pincers and front retarder;

FIGURE 17 is a view taken on the line 17-17 of FIGURE 16;

FIGURE 18 is a view taken on the line 1818 of FIG- URE 16;

FIGURE 19 is a plan view of the side retarders;

FIGURE 20 is a view taken on the line 20-20 of FIG- URE 19;

FIGURE 21 is a view taken on the line 21-21 of FIG- URE 19;

FIGURE 22 is a view taken on the line 22-22 of FIG- URE 19;

FIGURE 23 is a plan view of a portion of the machine showing the mounting of the side pincers;

FIGURE 24 is a view taken on the line 24-24 of FIG- URE 23;

FIGURE 25 is a view taken on the line 25-25 of FIG- URE 23;

FIGURE 26 is a view taken on the line 26-26 of FIG- URE 23;

FIGURE 27 is a view taken on the line 27-27 of FIGURE 23;

FIGURE 28 is an elevation of a side pincers;

FIGURE 28A is a view taken on the line 28A-28A of FIGURE 28;

FIGURE 29 is a side elevation of a portion of the machine showing the hold-down and wiper operating mechanisms and also showing a heel clamp operating mechanism;

FIGURE 30 is a section showing a heel clamp braking mechanism taken on the line 30-30 of FIGURE 29;

FIGURE 31 is a plan view of the heel clamp;

FIGURE 32 is a view taken on the line 32-32 of FIGURE 31;

FIGURE 33 is a view taken on the line 33-33 of FIGURE 32;

FIGURE 34 is a view taken on the line 34-34 of FIGURE 31;

FIGURE 35 is a side elevation of a portion of the machine showing an arrangement for moving the wipers from an out-of-the-way position to a working position;

FIGURE 36 is a view taken on the line 36-36 of FIGURE 35;

FIGURE 37 is a view taken on the line 37-37 of FIGURE 35;

FIGURE 38 is a view taken on the line 38-38 of FIGURE 35;

FIGURE 39 is a section taken on the line 39-39 of FIGURE 1;

FIGURE 40 is a view taken on the line 40-40 of FIGURE 29;

FIGURE 41 is a plain view taken on the line 41-41 of FIGURE 29;

FIGURE 42 is a section taken on the line 42-42 of FIGURE 41;

FIGURE 43 is a fragmentary view to an enlarged scale showing a knife mounted for movement in the wipers;

FIGURE 44 is a view taken on the line 44-44 of FIGURE 43;

FIGURE 45 is a detail showing a knife guiding ar rangement;

FIGURE 46 is a view taken on the line 46-46 of FIGURE 43;

FIGURE 47 is a plan view of the shoe conforming yoke and the bumpers;

FIGURE 48 is a view taken on the line 48-48 of FIGURE 47;

FIGURE 49 is a view taken on the line 49-49 of FIGURE 47;

FIGURE 50 is a view taken on the line 50-50 of FIGURE 47;

FIGURE 51 is a plan view of a control pedal arrange. ment for the machine;

FIGURE 52 is a view taken on the line 52-52 of FIG- URE 51;

FIGURE 52A is a view taken on the line 52A-52A of FIGURE 52;

FIGURE 53 is a schematic diagram of the control circuit of the machine;

FIGURE 53A is a schematic representation of a time delay mechanism used in operating the machine;

FIGURE 54 is a representation of the shoe assembly as it appears when it is placed in the machine;

FIGURE 54A is a view taken on the line 54A54A of FIGURE 54;

FIGURE 54B is a view taken on the line 54B-54B of FIGURE 54A;

FIGURE 55 is a representation of the shoe assembly as it appears in the machine after the upper has been stretched about the last by the front and side pincers;

FIGURE 55A is a view taken on the line 55A55A of FIGURE 55;

FIGURE 55B is a view taken on the line 55B-55B of FIGURE 55A;

FIGURE 56 is a representation of the bottom of the insole with cement applied thereto;

FIGURE 57 is a representation of the shoe assembly, shoe conforming yoke and bumpers during the rise of the shoe assembly through the yoke;

FIGURE 58 is a representation of the shoe assembly as it appears in the machine after the shoe assembly has risen to a level wherein the insole bottom is slightly higher than the level of the tops of the wipers;

FIGURE 58A is a view taken on the line 58A58A of FIGURE 58;

FIGURE 58B is a view taken on the line 58B58B of FIGURE 58A; and

FIGURE 59 is a representation of the last and wipers at the beginning of the wiping stroke.

Referring to FIGURES l-3, the machine includes a frame that incorporates a base plate 12 that has a sleeve 14 extending downwardly therefrom. For convenience of operation, the machine is inclined about 30 degrees from the horizontal. However, parts extending in the direction of the plate 12 will hereafter be referred to as extending horizontally and parts extending in the direction of the sleeve 14 will hereafter be referred to as extending vertically. The operator is intended to be located to the left of the machine as seen in FIGURE 1, and a direction extending toward the operator (right to left in FIGURE 1) will be referred to as forward while a direction extending away from the operator (left to right in FIGURE 1) will be referred to as rearward."

An air operated motor 16 is secured to a cap 18 at the bottom of the sleeve 14, and a toe post 20 is secured to the piston rod 22 of the motor 16 to extend vertically and be slidable within the sleeve 14. A roller 24, bolted to the sleeve 14, is received in a vertical slot 26 in the post 20 to preclude rotation of the post about the axis of the sleeve.

A bracket 28, bolted to the post 20, has a normally closed valve 30 secured thereto whose actuator is in alignment with a cam 32 that is bolted to the sleeve 14. A pair of valves 34 and 36 are bolted on a bracket 38 that depends from the frame 10, see FIGURES 3 and 4. The actuators of the valves 34 and 36 are respectively in alignmentwith cams 40 and 42 that are secured to the bracket 28.

A toe post extension 44 (FIGURES 5 and 6) is secured to the upper end of the post 20. A bar 46, which serves as an insole rest mount, is slidably mounted for vertical movement between a bearing plate 48 and gibs 50 that are secured to the post extension 44. A nut 52, rotatably mounted in the post extension 44, is in threaded engagement with a screw 54 that is fastened to the bar 46 whereby rotation of the nut affects vertical adjustment of the bar and the below described insole rests mounted on the bar. A pivot pin 56, located at the top of the bar 46, extends through a prong 58 at the top of the bar. A lug 60 extending rearwardly of the pin 56 has forwardly directed legs 62 that straddle the prong 58 and are pivoted on the pin 56. A toe insole rest 64 extends upwardly of the rear end of the lug 60. A pair of legs 66 are pivoted on the pin 56 outwardly of the legs 62. A cross-beam 68, extending between the legs 66, has a pair of forepart insole rests 70 extending upwardly thereof. A leaf spring 72, secured to the front of the top of the bar 46 by screws 74, has upwardly extending limbs 76 and 78 that respectively bear against the legs 62 and 66 to yieldably urge them clockwise (FIG. 6) about the pin 56 to hereby yieldably urge the insole rests 64 and 70 downwardly. A stop ledge 80 on the bar 46 hearing against the lug 60 limits the downward movement of the insole rest 64. A stop bolt 82, threaded into the bar 46 and bearing against the cross-beam 68, limits the downward movement of the insole rests 70. By operating the bolt 82 the elevation of the insole rests 70 may be vertically adjusted to accommodate the insole rests to the style and size of the the shoe being operated on. The insole rests 64 and 70 may be swung upwardly about the pivot 56 from their normal prone position against the force of the spring 72 until the spring limbs 76 and 78 bear against what are the upper surfaces of the legs 62 and 66 as seen in FIGURE 6 to thereby maintain these legs and the insole rests 64, 70 in an upright position for the reasons given below.

A rearwardly extending ledge 84 of the post extension 44 has a hanger 86 depending therefrom. An air operated motor 88 is pivoted to the hanger 86. The piston rod 90 of the motor 88 is pivoted to a link 92, and the link 92 is pivoted to a pair of toggle links 94 and 96. The link 96 extends downwardly of the link 92 and is pivoted to the post extension 44 while the link 94 extends upwardly of the link 92 and is pivoted to a slide 98 that is guided for vertical sliding movement by the post extension 44 and the bearing plate 48. A mount 100- is secured to the slide 98 and has a pair of front prongs 102 and a rear prong 104 extending upwardly thereof, the prongs 102 and 104 being laterally offset from each other as indicated in FIGURES 5 and 6. Upwardly extending compression springs 106 are seated in each of the prongs 102, 104. Each of the springs 106 bears against a rod 108 to yieldably urge the rods upwardly. Pins 110 in the rods 108 ride in slots 112 in the prongs 102, 104 and normally bear against the tops of the slots to limit the extent of upward movement of the rods 108.

The pins 110 are connected by way of pin and slot connections 114 (FIGURE 6) to a bracket 118. A ferrule 115 extends through and is secured to the bracket 118 and extends through an applicator-support 120 that rests on the bracket 118. The applicator-support 120 comprises a base section 122 that lies beneath the lug 60 and an upwardly extending and forked extruding and support section 124 that has a pair of legs 125 diverging forwardly and downwardly from an apex. The extruding section 124 lies outwardly of the lug 60 and insole rest 64. The section 124, which has a configuration corresponding to the margin of the toe portion of the insole of the shoe to be toe lasted, is secured to the bracket 118 by a fastening member such as a nut 125a threaded onto the ferrule 115 and by aligning pins 127. If it is desired to replace the applicator-support section 120 with one having a different configuration, the insole rests 64, 70 are raised to an upright position in the manner described above to provide access to the nut 12S and the nut 125 is removed to enable the member 120 to be removed and replaced with another member 120 having the desired configuration. A groove 126 is provided in the top of the extruding-support section 124 and 

